Sand/Polyethyleneimine Composites with Enhanced Sorption/Desorption Properties toward Pollutants
dc.bibliographicCitation.firstPage | 3928 | |
dc.bibliographicCitation.issue | 23 | |
dc.bibliographicCitation.volume | 14 | |
dc.contributor.author | Bucatariu, Florin | |
dc.contributor.author | Petrila, Larisa-Maria | |
dc.contributor.author | Zaharia, Marius-Mihai | |
dc.contributor.author | Simon, Frank | |
dc.contributor.author | Mihai, Marcela | |
dc.date.accessioned | 2023-02-03T07:19:18Z | |
dc.date.available | 2023-02-03T07:19:18Z | |
dc.date.issued | 2022 | |
dc.description.abstract | The direct deposition of polyethyleneimine (PEI), a weak polycation with a large content of amino groups, onto sand fractions with different sizes (F70, F100, F200, and F355), resulted in versatile core-shell sorbents for water cleaning. Herein, PEI and the weak polyanion poly(acrylic acid) (PAA) were directly precipitated as an nonstoichiometric polyelectrolyte complex ([PEI]:[PAA] = 2:1) onto a sand surface followed by cross-linking with glutaraldehyde (GA) at three molar ratios ([CHO]:[amine] = 1:10; 1:5; 1:1 = r). Non-crosslinked polyelectrolyte chains were washed out in strongly basic (pH 14) and acidic (pH 0) media. The sand/PEI-GA composites were evaluated to determine the organic shell stability using swelling experiments and X-ray photoelectron spectroscopy. The sorbed/desorbed amount of two model pollutants (copper ions and bromocresol green) in column experiments depended on the sand fraction size and cross-linking degree of the PEI shell. The maximum recorded values, after five loading/release cycles of pollutant species onto F70/PEI-GAr, F100/PEI-GAr, F200/PEI-GAr, and F355/PEI-GAr, were situated between the 0.7–5.5 mg Cu2+/mL column and 3.7–15 mg BCG/mL column. Sand/PEI-GAr composites could act as promising sorbents, low-cost and eco-friendly, which could be applied for water purification procedures. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/11212 | |
dc.identifier.uri | http://dx.doi.org/10.34657/10248 | |
dc.language.iso | eng | |
dc.publisher | Basel : MDPI | |
dc.relation.doi | https://doi.org/10.3390/w14233928 | |
dc.relation.essn | 2073-4441 | |
dc.relation.ispartofseries | Water 14 (2022), Nr. 23 | |
dc.rights.license | CC BY 4.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0 | |
dc.subject | bromocresol green | eng |
dc.subject | column experiment | eng |
dc.subject | composite sorbent | eng |
dc.subject | copper ions | eng |
dc.subject | water cleaning | eng |
dc.subject.ddc | 690 | |
dc.title | Sand/Polyethyleneimine Composites with Enhanced Sorption/Desorption Properties toward Pollutants | eng |
dc.type | article | |
dc.type | Text | |
dcterms.bibliographicCitation.journalTitle | Water | |
tib.accessRights | openAccess | |
wgl.contributor | IPF | |
wgl.subject | Umweltwissenschaften | ger |
wgl.type | Zeitschriftenartikel | ger |
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